include/wx/helpbase.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpbase.h
   3 // Purpose:     Help system base classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_HELPBASEH__
  13 #define _WX_HELPBASEH__
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_HELP
  18
  19 #include "wx/object.h"
  20 #include "wx/string.h"
  21 #include "wx/gdicmn.h"
  22 #include "wx/frame.h"
  23
  24 // Flags for SetViewer
  25 #define wxHELP_NETSCAPE     1
  26
  27 // Search modes:
  28 enum wxHelpSearchMode
  29 {
  30     wxHELP_SEARCH_INDEX,
  31     wxHELP_SEARCH_ALL
  32 };
  33
  34 // Defines the API for help controllers
  35 class WXDLLEXPORT wxHelpControllerBase: public wxObject
  36 {
  37 public:
  38     inline wxHelpControllerBase() {}
  39     inline ~wxHelpControllerBase() {}
  40
  41     // Must call this to set the filename and server name.
  42     // server is only required when implementing TCP/IP-based
  43     // help controllers.
  44     virtual bool Initialize(const wxString& WXUNUSED(file), int WXUNUSED(server) ) { return false; }
  45     virtual bool Initialize(const wxString& WXUNUSED(file)) { return false; }
  46
  47     // Set viewer: only relevant to some kinds of controller
  48     virtual void SetViewer(const wxString& WXUNUSED(viewer), long WXUNUSED(flags) = 0) {}
  49
  50     // If file is "", reloads file given  in Initialize
  51     virtual bool LoadFile(const wxString& file = wxEmptyString) = 0;
  52
  53     // Displays the contents
  54     virtual bool DisplayContents(void) = 0;
  55
  56     // Display the given section
  57     virtual bool DisplaySection(int sectionNo) = 0;
  58
  59     // Display the section using a context id
  60     virtual bool DisplayContextPopup(int WXUNUSED(contextId)) { return false; };
  61
  62     // Display the text in a popup, if possible
  63     virtual bool DisplayTextPopup(const wxString& WXUNUSED(text), const wxPoint& WXUNUSED(pos)) { return false; }
  64
  65     // By default, uses KeywordSection to display a topic. Implementations
  66     // may override this for more specific behaviour.
  67     virtual bool DisplaySection(const wxString& section) { return KeywordSearch(section); }
  68     virtual bool DisplayBlock(long blockNo) = 0;
  69     virtual bool KeywordSearch(const wxString& k,
  70                                wxHelpSearchMode mode = wxHELP_SEARCH_ALL) = 0;
  71     /// Allows one to override the default settings for the help frame.
  72     virtual void SetFrameParameters(const wxString& WXUNUSED(title),
  73         const wxSize& WXUNUSED(size),
  74         const wxPoint& WXUNUSED(pos) = wxDefaultPosition,
  75         bool WXUNUSED(newFrameEachTime) = false)
  76     {
  77         // does nothing by default
  78     }
  79     /// Obtains the latest settings used by the help frame and the help
  80     /// frame.
  81     virtual wxFrame *GetFrameParameters(wxSize *WXUNUSED(size) = NULL,
  82         wxPoint *WXUNUSED(pos) = NULL,
  83         bool *WXUNUSED(newFrameEachTime) = NULL)
  84     {
  85         return (wxFrame*) NULL; // does nothing by default
  86     }
  87
  88     virtual bool Quit() = 0;
  89     virtual void OnQuit() {}
  90
  91 private:
  92     DECLARE_CLASS(wxHelpControllerBase)
  93 };
  94
  95 #endif // wxUSE_HELP
  96
  97 #endif
  98 // _WX_HELPBASEH__